Collapsible carton



Dec. 10, 1957 w. H. [NMAN 2,815,397

COLLAPSIBLE CARTON Original Filed July 27, 1951 4 3 Sheets-Sheet 1 7 I615 l4 4 l3 l7 IZ'\ INVENTOR. WILLIAM H. mm

w. H. INMAN COLLAPSIBLE CARTON Dec. 10, 1957' Original Filed July 27,1951 3 Sheets-Sheet 2 R m m m WILLIAM H. INHAN ms ATTORNEY Dec. 10, 1957w. H. INMAN 2,315,897

COLLAPSIBLE CARTON Original Filed July 27, 1951 3 Sheets-Sheet 5 v 6'INVENTORQ 3 WILLIAM H. IIVMAN HIS AUORNEY .lnited States PatentCOLLAPSIBLE CARTON William H. Inman, Newark, N. Y., assignor to Bloomerg ros. Company, Newark, N. Y., a corporation of New ork Continuation ofabandoned application Serial No. 238,931, July 27, 1951. Thisapplication August 16, 1955, Serial No. 528,611

12 Claims. (Cl. 229-39) This invention relates to set-up, collapsible,cardboard cartons of the variety having bottom flaps so constructed asto be automatically unfolded and extended by erecting manipulation ofthe side walls, to conveniently disanother to more fully expose thecontents, thus also rendering the carton unfit for further use. Thisapplication is a continuation of my copending application, Serial No.238,931, filed July 27, 195-1, Collapsible Carton, now abandoned.

One object of the present invention is to provide an improved carton ofthe general character described and so constructed as to be readilyopened for access to the contents, but kept substantially intact and incondition for being closed again for further preservation of itsremaining contents.

Another object is to supply a carton of this nature so constructed as tobe readily manufactured and to be conveniently erected for filling, aswell as convenient for use by the consumer as described above.

A further object is the provision of a carton con structed as describedand cap-able of being readily opened by the consumer and convenientlyclosed again without soiling the fingers, for return to the refrigeratorto preserve an unused portion of the contents.

Still a further object is to afford a carton having the above advantagesin a form capable of being readily manufactured in quantity lots, byknown machines and at relatively low cost.

To these and other ends the invention resides in certain improvementsand combinations of parts, all as will be hereinafter more fullydescribed, the novel features being pointed out in the claims at the endof the specification.

In the drawings:

Fig. '1 is a plan view of a cardboard blank for forming the carton;

Fig. 2 is a similar view with bottom flap portions folded over and glueapplied;

Pig. 3 is an edge view of the blank as seen from the right in 'Fig. 2but with outer wall portions partly folded over toward glued position;

Fig. 4 is a view similar to Fig. 3 but with the parts glued together andthe carton in collapsed condition;

Figs. 5, 6 and 7 are top plan views of the inside of the carton inprogressive positions of erection for filling;

Figs. 8, 9 and 10 are bottom plan views of the outside of the carton inprogressive positions of erection for filling, corresponding to Figs. 5,6 and 7;

ice

Fig. 1 1 is a perspective view of the carton showing the same erected,filled and closed;

Fig. 12 is a similar view of the cart-on after being opened to remove aportion of the contents;

Fig. 13 is a fragmentary view similar to a portion of Fig. 2 but showinga modified construction; and

Fig. 14 is a view similar to Fig. 3 but showing the modifiedconstruction of Fig. 13.

The embodiment of the invention, herein disclosed by way ofillustration, is preferably made with a one-piece cardboard blank suchas shown in Fig. 1 of the drawings, cut and scored to form front, side,rear and closure walls 1, 2, 3 and 4, respectively, separated byparallel scored fold lines 5, 6 and 7, as shown. Closure wall 4 carriesa securing strip 8 foldably connected therewith and adapted to 'befolded over and detachably glued to the free edge portion 9 of theopposite or front wall 1 when the walls are folded over, as hereafterdescribed. Closure wall 4 also has its inner surface cut or otherwisescored along a line 10 to produce a weakened surface area 11, for apurpose hereafter described. Front wall 1 has a slit 12 extendinginwardly from its free edge adjacent one end thereof, for a purposehereafter described.

Walls 1 to 4, inclusive, are provided with top closure flaps 13 to 16,respectively, which are toldably connected therewith along a score line17. Fla-p 13 is formed with a slit 18 cut therethrough and having itsends connected with score lines to facilitate the bending of the flap toopen the slit 18 for the reception of a tongue or hook 19 on flap 15,for securing these top flaps in position for closing the top of thecarton through which it is filled with the desired contents.

Front and rear walls 1 and 3 carry bottom closure flaps 20 and 21,respectively, foldably connected therewith along a score line 22. Theseflaps are provided with score lines 24 and 25, respectively, extendingdiagonally across and separating each of them into two sections, as 26and 27, so that each may be folded on itself and folded over the sidewall to which it is connected, as further described hereafter. Flap 20carries a relatively narrow flange 28 folda bly connected therewithalong a core line 29.

The outer free edges of flaps 20 and 21 have the irregular shape shownin the drawings, including notches 3'2 and 33, respectively, forengagement with each other in the erected position, as hereafterdescribed. Side wall 2 has a substantially rectangular inner bottom flap23 foldably connected therewith along a score line 30, between fiaps 20and 21 and flap 23 is crossed by a score line 31, as shown, to enable itto bend more flexibly while in contact with the front wall during theerection of the carton as hereafter described.

:In the folding and gluing of the blank, as shown in Fig. 2, flap 23 isfolded over side wall 2. Bottom fiap 20 is folded on itself and foldedinwardly over walls 1 and 2 and its flange 28 is folded inwardly overthe folded flap, as shown. Flap 21 is folded on itself and folded overwall 3. 'In this position of the parts glue is applied to a restrictedarea 34 of flap 21 and to the exposed side of flange 28 as shown at 35,a small portion 36 of the flange being preferably left unglued forengagement by a positioning part of a gluing machine. She is likewiseapplied in a narrow band 37 on securing strip 8, adjacent its line offold, leaving an unglued outer edge portion 38 to provide a free fulltab which is preferably extended as at 39 so as to be readily grasped.

-In the further folding and gluing of the blank, the front and sidewalls 1 and 2, with the inwardly folded flaps 20 and 23, are folded overfront wall 1 and closure wall 4, about the intermediate score line 6, asshown in Fig. 3, the flap 21 being folded inwardly as shown in Fig. 2.This brings the inner bottom flap 23 into glued cohesion with flap 21and brings flange 28 of inwardly folded flap 20 into glued cohesion withthe area 11 of closure wall 4. Securing strip 8 of the underlyingclosure wall 4 is thenfolded up-wardly around and over theouter or freeedge 9 of the front wall;and pressed downinglued cohesiontherewith,thus-completing thefolding and g1uing of the carton inthe compactcollapsed position shown in- Fig. 4, ready for storage and shipment to-the ice cream dispenser.

When it is-desired to erect the carton for filling, this is quicklyaccomplished by inward pressure against the opposite folded edges, whichserve to separate and distend theside walls in the, progressive mannershown in Figs. 5, 6 and 7, as viewed'from the open top of the containerandin Figs. 8 9 and 10 as seen from a bottom view. Theseparation, of,the rearwall 3 from the side Wall 2 tends to pull the inwardlyfoldedflap 21 and inner bottom flap 23 to erected position, while theseparation of closure wall;4 and front wall 1 pulls inwardly folded flap20 toward erected position. In such movement a portion of the edge offlap 20 rides under a portion of the edge of flap 21, while a portionofthe edge of flap 21 rides under a portion of the edge of flap 20, withthe result that the opposing edges move along one another in crossingrelation and are finally interengaged in notches 32 and 33, as shown inFigs. 9 and 10. Such an engagement tends to limit the erecting movementwith these inwardly folding flaps in a position normal to the walls ofthe carton and the erecting movement is further limited by the erectingmovement of the inner bottom fiap 23 and its engagement with the insideof flaps 20 and 21 along the bottom corners of the carton. The bottomflaps are quickly snapped to such erected position by merely pressingthe opposite corners of the carton, as stated, leaving the top closureflaps 13 to 16, inclusive, in openposition to receive the contents.

The carton, resting on its bottom, is then filled and top closure flaps14 and 16 are folded down across the filling opening, in order, afterwhich flap 13 is folded down, followed by flap 15, the'tongue 19 ofwhich is engaged in slit 18 of flap 13 to secure the closure of the-topor filling opening. The terms top and bottom are herein employed inreference to the corresponding parts-when the carton occupies thisposition for filling with its contents. It will be noted that tongue 19is on the flap of the rear wall to which the closure wall is hinged andis pointed in the direction of the closure wall so that an opening pullon the latter serves to keep the tongue engaged in slit 18 and that endof the carton closed. The carton is then in condition shown in Fig. ll,for delivery to the consumer.

For opening the carton, the unglued free edge 38 of securing strip 8,and particularly its extension 39, is readily grasped and pulled toseparate the. securing strip from the front wall and the closure wall 4from the flange 28. The surface area 11, weakened and limited by thescore 10, pulls away from closure wall 4 and adheres to the flange so asto insure ready separation of the closure wall from the flange. Suchdetachment of the surface portion 11 terminates at the hinge line 7 ofthe closure wall, as indicated at 40 (Fig. 12) leaving a web of materialconnecting the flange with the top of the rearwall so as to maintain aconnection between the front and rear wallsand hold them in place andthe bottom flaps in engagement. These provisions, together with the factthat the closure wall isglued only along the narrow bands 35 and 37,insure ready separation of the closure wall for raising it to open thecarton.

The top closure flap 16, which does not contact the contents, isreadilyraised and the closure wall 4 is'thus easily raised to the openposition shown in Fig. 12. The remaining top closureflaps are maintainedin closed position, so that the carton is maintained in shaperwhileasniuch of the, conter1ts l. as .dESiI'CdIlS dipped out.

To close the carton again and preserve the residue of the contents forfuture consumption, the closure wall 4 is folded down with its top flap16 inserted between the top flaps 13 and 14 and with its securing stripinserted inside the top edge of the front wall. One end of the securingstrip, however, is inserted through the slit 12 of the front wall so asto extend on the outside of the front wall in separated relation withthe carton contents. This effectively closes the carton, ready forreturn to the refrigerator, while preserving a clean end on the securingstrip extending to the outside of the front wall which may begraspedtoraise the closure wall without soiling the fingers.

In a modified construction, the flange 28 may be formed at its inner endwith a finger-like extension 41 (Fig. 13) to which glue may be appliedalong with the rest of the flange. In folding and gluing thisconstruction, as the wallsl and 2 are'folded over (Fig. 14), theextension 41, with glue on its inner surface, is inserted in. betweenthe inner face of rear wall 3 and its inwardly folded flap 21 and soglued to the rear wall to taketthe place of the web connect-ion 40described above. The; partsare then pressed down and completed incollapsed condition as shown for the first form of the invention. Itisevident. also that, in either form of the invention, theblank may beturned over, under side uppermost fromthe position shown in Figs. 1 and2 and the parts scored, folded and glued in relatively. reversedpositions, as well understood in the art, the closure wall then openingin-a right hand direction from the opposite side of the. carton shown inFigs. ll and 12.

The invention, as herein disclosed, comprises related embodiments of theinvention originally disclosed in my prior patent application, SerialNo. 238,932, now abandoned, which was copending with and filed on thesame day. as my prior patent application, Serial No. 238,931,

now. abandoned, of which the present application is a continuation- Theinventions and embodiments originally disclosed in my application,Serial No. 238,932 were subsequently disclosed in a continuationapplication, Serial No. 352,160, now Patent No. 2,686,629, issued August17, 1954. Certainfeatures disclosed but not claimed hereinare claimed inmy above patent, No. 2,686,629.

It is apparent from the above description that the invention providesacarton which may be readily and economically manufactured from theusual materials and by known methods and-standard machines, in compactcollapsed condition for storage and shipment to the food dispenser.The-latter may quickly erect the carton by merely pressing its oppositecorners to erect its automatic bottom-and then-fill it and close its topin the usual manner, ready-for delivery to the consumer. The consumercan easily open the carton to remove a portion of its contents bypulling'on the pull tab 8 so as to raise the cover to open condition inwhich the contents may be readily dipped out to the extent desired. Thecarton may then .be-readily closed to preserve its remaining contents byclosing and securing the cover as described, a portion of the pull tabbeing conveniently disposed on the outside of thefront'wall to providemeans for further opening of the cover without soiling the fingers.

It will; thus -be,-seen that the invention accomplishes its objects andwhile it has been herein disclosed by reference to the details. ofpreferred embodiments, it is to be understood that such disclosure isintended in an illustrative, rather than a limiting sense, as it iscontemplated that various modifications in the construction andarrangement of the parts will readily occur to those skilled in the art,within the spirit of the invention and the scope ofjthe appended claims.

I claim:

1. A collapsible carton having a self-erecting bottom comprising a blankcut, scored and folded to form foldably connected side walls and aclosure wall, a detachable connection between said closure wall and theopposite side wall for securing said closure wall in closed position,top closure flaps on said walls, a pair of opposite side walls havingbottom closure flaps foldably connected therewith and each formed with afold line and adapted to fold inwardly at said fold line between theside walls when said side walls are collapsed, and a bottom closure flapfoldably connected with the intermediate side wall and having a gluedconnection with one of said inwardly folding flaps, the other of saidinwardly folding flaps having a flange extending foldably inwardlybetween the side walls and detachably glued to said closure wall, saidbottom closure flaps being moved to erected position normal to said sidewalls by erecting movement of said side walls and said closure wallbeing detachable from said side wall and from said flange and movable toopen position to expose the carton contents with the carton in erectedcondition.

2. A collapsible carton having a self-erecting bottom comprising a blankcut, scored and folded to form foldably connected side walls and aclosure wall, a securing strip on said closure wall detachably connectedwith the free edge of the opposite side wall, top closure flaps on saidwalls, a pair of opposite side walls having bottom closure flapsfoldably connected therewith and each provided with a fold line andadapted to fold inwardly at said line between the side walls when saidside walls are collapsed, and a bottom closure flap foldably connectedwith the intermediate side wall and having a glued connection with oneof said inwardly folding flaps, the other of said inwardly folding flapshaving a flange extending foldably inwardly between the side walls anddetachably glued to said closure wall, said bottom closure flaps beingmoved to erected position normal to said side walls by erecting movementof said side walls, and said securing strip and closure wall beingdetachable from said side wall and from said flange and movable to openposition with the carton in erected condition, said free edge of saidside wall having an inwardly extending slit adjacent one end thereof,and said closure wall after opening being movable again to closedposition with the major portion of said securing strip inserted insidesaid free edge and an end portion extending outwardly through said slitand separated from contact with the carton contents for grasping to movesaid closure wall without soiling the fingers.

3. A collapsible carton having a self-erecting bottom comprising aone-piece blank cut, scored and folded to form foldably connected front,rear, side and closure walls, a detachable connection between saidclosure wall and said front wall, top closure flaps on said walls, saidfront and rear walls having bottom closure flaps foldably connectertherewith and each formed with a fold line and adapted to fold inwardlyat said fold line between the side walls when said side walls arecollapsed, and an inner bottom closure flap on said side wall havingsubstantially the size and shape of the inside bottom of said carton andadapted to cover the same, said inner bottom flap having a gluedconnection with one of said inwardly folding flaps, the other of saidinwardly folding flaps having a flange extending foldably inwardlybetween said front and rear walls and detachably glued to said closurewall, said bottom closure flaps being moved to erected position normalto said side walls by erecting movement of said walls, and said closurewall being detachable from said side wall and from said flange andmovable to open position to expose the carton contents with the cartonin erected condition.

4. A collapsible carton having a self-erecting bottom comprising aone-piece blank cut, scored and folded to form foldably connected front,rear, side and closure walls, a securing strip on said closure walldetachably glued to the free edge of said front wall and having a freepull tab, top closure flaps on said walls, bottom closure flaps on saidfront and rear walls and each provided with a fold line and adapted tofold inwardly at said line between said walls when said walls arecollapsed, an inner bottom closure flap on said side wall havingsubstantially the size and shape of the inside bottom of the carton tocover the same and having a glued connection with one of said inwardlyfolding flaps, and a flange on the other of said inwardly folding flapsextending foldably inwardly between said front and rear walls anddetachably glued to said closure wall, said bottom flaps being moved toerected position normal to said walls by erecting movement of saidwalls, said inwardly folding flaps having notched edges for engagementwith each other to locate the same in erected position, and saidsecuring strip and closure wall being detachable from said side wall andfrom said flange and movable to open position to expose the cartoncontents with the carton in erected condition.

5. A collapsible carton having a self-erecting bottom comprising aone-piece blank cut, scored and folded to form foldably connected front,rear, side and closure walls, a detachable connection between saidclosure wall and said front wall, top closure flaps on said walls, apair of bottom closure flaps foldably connected with said front and rearwalls and each formed with a fold line and adapted to fold inwardly atsaid line between said walls when said walls are collapsed, an innerbottom closure flap foldably connected with said side wall and having aglued connection with one of said inwardly folding flaps, said bottomclosure flaps being moved to erected position normal to said walls byerecting movement of said walls, said closure wall being formed with atransverse portion separable from the remainder of said closure wall,said transverse portion having a glued connection with the other of saidinwardly folding flaps and extending upwardly from the bottom of saidcarton, the remainder of said closure wall being detachable from saidfront wall and from said transverse portion and movable to open positionwith said transverse portion connecting said front and rear walls formaintaining the same in erected position.

6. A collapsible carton having a self-erecting bottom comprising a blankcut, scored and folded to form foldably connected side walls and aclosure wall, a detachable connection between said closure wall and thefree edge of one of said side walls, top closure flaps on said walls, apair of opposite side walls having bottom closure flaps foldablyconnected therewith and each formed with a fold line and adapted to foldinwardly at said fold line between the side walls when said side wallsare collapsed, and a bottom closure flap foldably connected with theintermediate side wall and having a glued connection with one of saidinwardly folding flaps, the other of said inwardly folding flaps havinga flange extending foldably inwardly between the side walls anddetachably glued to said closure wall, said closure wall being partiallycut through along the edge of the area of contact with said flange forproviding a weakened surface area for attachment to said flange, saidbottom closure flaps being moved to erected position normal to said sideand closure walls by erecting movement of said walls, and said closurewall being detachable from said side wall and flange and movable to openposition with a portion of said weakened area of said closure wallconnected with said flange to maintain the connection between saidopposite side walls and maintain said carton in erected condition.

7. A collapsible carton having a self-erecting bottom comprising aone-piece blank cut, scored and folded to form foldably connected sidewalls and a closure wall, a securing strip on said closure walldetachably connected with the free edge of one of said side walls, topclosure flaps on said walls, bottom closure flaps foldably con nectedwith oppositely arranged side walls and each formed with a fold line andadapted to fold inwardly at said line between the side walls when saidside walls are collapsed and a bottom closure flap foldably connectedwith the intermediate side wall and having a glued connection with oneof said inwardly folding flaps, the

other of' saidiinwardly..foldingflaps'having a flange extending foldablyinwardly between the side wallsand detachably glueditosaid closure wall,saidlclosurewall beingpartially cut throughalong; the edge of the areaof contact with said flange for providing aweakened surface-area for.attachment to 'saidflange, said bottomclosure flaps being moved toerected position normal to said side walls by erecting movement ofsaidside walls, and said securing strip and closure wall being detachablefrom said side wall and said flange and movable to open position with aportion of saidweakenedarea of said closurewall connected withsaidzflange to maintain the connection between said opposite side wallsand maintain said carton in erected condition, said free edge ofsaidside wall having. an inwardly extending slit adjacent one-endthereof and said closure wallafter opening being movable again to closedposition with the major portion of said securing strip inserted insidesaid free edge and an end portion extending outwardly through saidtslitand protectedagainstcontact with the carton contents.

8. A collapsible carton having a self-erecting bottom comprisingatone-piece blank cut, scored and folded'to form foldably connectedfront, rear, side and closure walls, a securing strip on said closurewall detachably glued to the free edge of said front wall and having afree pull tab, top closure flaps on said walls, a pair of bottom closureflaps foldably connected with said front and rear walls and each formedwith a fold line and adapted to fold inwardly at said line between saidwalls when said walls are collapsed, and an inner bottom closure flapfoldably connected with said side wall and having a glued connectionwith said inwardly folding flap on said rear wall, the other of saidinwardly folding flaps having a flange extending foldably inwardlybetween said walls and detachably glued to said closure wall, saidclosure wall being partially cut through along the edge of the area ofcontact with said flange for providing a weakened surface area forattachment to said flange, said bottom closure flaps being moved toerected position normal to said side walls by erecting movement of saidside walls and said securing strip and closure wall being detachablefrom said front wall and flange and movable to open position with aportion of said weakened area of said closure wall connected with saidflange to maintain the connection between said front and rear walls andmaintain said carton in erected condition.

9. A collapsible carton having a self-erecting bottom comprising aone-piece blank cut, scored and folded to form foldably connected front,rear, side and closure walls, a detachable connection between saidclosure wall and the free edge of said front wall, top closure flaps onsaid walls, a pair of bottom closure flaps foldably connected with saidfront and rear walls and each formed with a fold line and adapted tofold inwardly at said fold line between the side walls when said wallsare collapsed, and an inner bottom closure fiap on said side wall havingsubstantially the size and shape of the inside of the bottom of saidcarton and adapted to cover the same, said inner bottom flap having aglued connection with the inwardly folding flap of said rear wall, theother of said inwardly folding flaps having a flange extending foldablyinwardly between the side walls and detachably glued to said closurewall, said closure wall being partially cut through along the edge ofthe area of contact with said flange-for providing a weakened surfacearea for attachment to'said flange, said bottomclosure flaps being movedto erected position normal to said walls by erecting movement of saidwalls, and saidclosure wall being detachable from said front wall andsaid flange and movable to open position with a portion of said weakenedarea of said closure wall connected with said flangeto maintain theconnection between said front and j rear walls and maintain said cartonin erected condition.

10. A collapsible cartonhaving a self-erecting bottom comprisinga-one-piece:blank cut, scored and folded to form foldably connectedfront, rear, side and closure walls, a; securing strip on said closure,wall detachably connected'with the free edge of: saidfront wallandprovided witha free-pull tab for detaching the-same, top closure flapson said walls, a pair of bottom closure flaps foldably connected withsaid'front and rear walls and eachprovided with a -fold; line andadapted to fold inwardly at said line betweentsaid walls when said Wallsare collapsed, an inner bottom closure flap foldably connectedwithsaid'side walland'having a glued connection with said rear, wall,one of said inwardly folding flaps having a flange extending foldablyinwardly between said walls and detachably-glued to said, closure wall,said closure wall being partially cut through along the edge of the areaof contact with said flange for providing a weakened surface area forattachment to said flange, said bottom closure flapsbeing moved toerected'position' normal to i said walls by erecting movement thereof,said inwardly folding flaps 'having'notched edges-for engagement witheach other'to secure the same in erected'position, and said securingstrip; andclosure wall being detachable from said front wall and flangeand movable to open position with a portion-of said 'weakened'area ofsaid closure wall connectedwith said flange, to maintain the connectionbetween said front and rearwalls and maintain said carton in erectedcondition.

11. A collapsible carton having a self-erecting bottom, comprising ablankcut, scored and folded to form foldably, connected'fronnrearandside. walls and a closure wallfoldably hinged .to said rear wall, adetachable connection between said closure wall and said front wall, topclosure flaps onpsaidwalls, a pair of bottom closure flaps foldably:connected'with said;front and rear walls and each formed with a-foldline andvadapted to fold inwardly at said fold line betweenside wallswhen said side walls are collapsed, an inner bottom closure flap,foldably connected with said sidewalland-having a glued connection withone of said inwardly folded-flaps, and a flange on the other of saidinwardly folding flaps extending foldably inwardly between the front andrearwalls and detachably glued to said closure wall'with one; endthereof extended and glued to said rear wall, said bottom closure flapsbeing moved :tO erected position normal to. said walls'by erectingmovement thereof and said closuretwall being detachable from said frontwall and from said flange and:.movable to open position to expose the:carton contents with the carton in erected position.

12. A collapsible carton-having a self erecting bottom comprising aone-piece blank cut, scored and folded to form front, rear and sidewalls and a closure wall foldably hinged to the top of said rear wall, adetachable connection between said closure wall and said front wall, topclosure flaps on said walls, a pair of bottom closure flaps foldablyconnected with said front and rear walls and each formed with a foldline and adapted to fold inwardly at said line between said walls whensaid walls are collapsed, an inner bottom closure flap foldablyconnected with said side wall and having a glued connection with theinwardly folding flap of said rear wall, and a flange on theother ofsaid inwardly folding flaps extending foldably inwardly between saidwalls and detachably glued to said closure wall with one end'extendedand glued to said rear wall, said bottom closure flaps being moved toerected position normal to said walls by erecting movement thereof, andsaid closure wall being detachable from said front wall and from saidflange: and movable to open position to expose the carton contents withthe carton in erected condition.

References Cited in the file of this patent UNITED STATES PATENTS2,686,629 Inman Aug. 17, 1954

